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  1. D

    Gunsmithing Swiss K31 stock cleaning

    Check Swissrifles.com on this topic it has been comprehensively covered. Original finish was shellac, from memory TSP has been suggested to clean after rubbing back while being careful not to round corners or remove cartouches.
  2. D

    Gunsmithing Saami Min Bore & Groove AREA 308 WIN.

    The issue with the trigonometry is that the sides of the lands are straight so calculating the area of a segment omits a small area throwing the calculation off. The bore, rifling depth and number of grooves are all given in the spec. and the cross sectional area is based off the dimensions given.
  3. D

    Gunsmithing Saami Min Bore & Groove AREA 308 WIN.

    Pi.r^2 isn't the answer as you can tell by plugging in .3 or .308 divided by 2 - you don't come up with the number in the spec. I used calculus but there is probably a simpler way
  4. D

    Gunsmithing Fast Barrels

    http://www.geoffrey-kolbe.com/articles/Pressure_Trials_Consortium.htm
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